The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2019
Filed:
Oct. 20, 2016
Cummins Inc., Columbus, IN (US);
Mert Geveci, Delmar, NY (US);
Andrew W. Osburn, Nashville, IN (US);
Cummins Inc., Columbus, IN (US);
Abstract
An exemplary method includes determining an NHreference target in an exhaust conduit between a first SCR catalyst and a second SCR catalyst. The method includes determining a present amount of NHin the exhaust conduit between the first SCR catalyst and the second SCR catalyst, and determining an NHerror term in response to the NHreference target and the present amount of NH. The method further includes determining an amount of NOdownstream of the second SCR catalyst, and adjusting one of the NHreference target and a reductant doser command in response to the amount of NOdownstream of the second SCR catalyst. The method further includes providing a reductant doser command in response to the NHerror term.